str1 = 'abc'
# str1 = 123456789


# for i in range(1, 11):
#     print(i)
# for i in range(3):
#     print(i)

# tua = (1, 2, 'c')
# print(type(tua))

dic = {'k1': 'v1', 'k2': 'v2'}
c = dic.get('k3')
print(type(c))

if c == 'None':
    print(c)